chore: publish docker on version change

Author: tianzhou

.github/workflows/docker-publish.yml

@@ -1,4 +1,11 @@
-name: Docker Build and Push
+# Workflow to build and publish Docker images for DBHub
+#
+# This workflow:
+# 1. Always pushes to the 'latest' tag when changes are pushed to the main branch
+# 2. If package.json version changes, also pushes a version-specific tag
+# 3. Builds for both amd64 and arm64 architectures
+
+name: Publish to docker hub
 
 on:
   push:
@@ -14,6 +21,32 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 2 # Fetch two commits to detect changes in package.json
+
+      - name: Check for package.json version changes
+        id: check-version
+        run: |
+          # Get current and previous package.json content
+          git show HEAD:package.json > package.json.current
+          git show HEAD~1:package.json > package.json.previous 2>/dev/null || cp package.json.current package.json.previous
+
+          # Extract versions
+          CURRENT_VERSION=$(jq -r '.version' package.json.current)
+          PREVIOUS_VERSION=$(jq -r '.version' package.json.previous)
+
+          echo "Current version: $CURRENT_VERSION"
+          echo "Previous version: $PREVIOUS_VERSION"
+
+          # Set output based on whether version changed
+          if [ "$CURRENT_VERSION" != "$PREVIOUS_VERSION" ]; then
+            echo "Version changed from $PREVIOUS_VERSION to $CURRENT_VERSION"
+            echo "VERSION_CHANGED=true" >> $GITHUB_OUTPUT
+            echo "VERSION=$CURRENT_VERSION" >> $GITHUB_OUTPUT
+          else
+            echo "Version unchanged: $CURRENT_VERSION"
+            echo "VERSION_CHANGED=false" >> $GITHUB_OUTPUT
+          fi
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -24,12 +57,29 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
+      - name: Prepare Docker tags
+        id: prep
+        run: |
+          # Always include latest tag
+          TAGS="${{ env.IMAGE_NAME }}:latest"
+
+          # Add version tag if version changed
+          if [[ "${{ steps.check-version.outputs.VERSION_CHANGED }}" == "true" ]]; then
+            VERSION="${{ steps.check-version.outputs.VERSION }}"
+            TAGS="$TAGS,${{ env.IMAGE_NAME }}:$VERSION"
+            echo "Publishing with tags: latest, $VERSION"
+          else
+            echo "Publishing with tag: latest only"
+          fi
+
+          echo "TAGS=$TAGS" >> $GITHUB_OUTPUT
+
       - name: Build and push Docker image
         uses: docker/build-push-action@v5
         with:
           context: .
           push: true
           platforms: linux/amd64,linux/arm64
-          tags: ${{ env.IMAGE_NAME }}:latest
+          tags: ${{ steps.prep.outputs.TAGS }}
           cache-from: type=gha
           cache-to: type=gha,mode=max

package.json

@@ -1,6 +1,6 @@
 {
   "name": "dbhub",
-  "version": "0.0.4",
+  "version": "0.0.5",
   "description": "Universal Database MCP Server",
   "main": "dist/index.js",
   "type": "module",